.stall-text{margin-bottom:32px}.stall-text h2{margin-top:8px}.stall-text p{color:var(--muted)}.stall-text strong{color:var(--ink)}.stall-text .reference,.reference{font-size:13px;color:var(--muted)}.stall-lab{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;overflow:hidden}.lab-title{display:flex;align-items:center;justify-content:space-between;gap:15px}.lab-title h2{font-size:25px;margin:8px 0 20px}.lab-title .eyebrow{margin:0}.flow-state{border-radius:30px;padding:6px 12px;background:#edf6f8;color:#176477;font-size:13px;font-weight:700;white-space:nowrap}.flow-state[data-stalled=true]{color:#97391e;background:#fff0e9}.angle-control{background:#f5f8f9;border-radius:10px;padding:16px 18px;margin:5px 0 25px}.angle-label{display:flex;align-items:center;justify-content:space-between;font-weight:600}.angle-label output{font-size:28px;font-family:Manrope,sans-serif;font-weight:700;font-variant-numeric:tabular-nums}.slider-row{display:flex;gap:16px;align-items:center;margin:10px 0}.slider-row button{background:white;border:1px solid var(--line);border-radius:8px;width:40px;min-width:40px;height:40px;font-size:24px;cursor:pointer;color:var(--navy)}.slider-row input{width:100%;accent-color:#176477;min-width:0;cursor:pointer;height:28px}.range-labels{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted)}.chart-heading,.airflow-heading{display:flex;gap:12px;justify-content:space-between;align-items:center}.chart-heading h3,.airflow-heading h3{font-size:17px;letter-spacing:-.02em;margin:12px 0}.chart-heading span{font-size:14px;white-space:nowrap}.chart-heading strong{font-variant-numeric:tabular-nums}#lift-chart{width:100%;height:255px;display:block;overflow:visible}.chart-note,.model-note{font-size:13px;color:var(--muted);line-height:1.6}.chart-note{margin:0 0 22px}.airflow-heading{border-top:1px solid var(--line);padding-top:12px}.airflow-heading button{background:white;color:var(--teal);border:1px solid var(--line);border-radius:7px;font-size:13px;padding:8px 10px;cursor:pointer}#airflow-canvas{width:100%;height:310px;display:block;border-radius:8px;background:#f3f8fa}.flow-legend{display:flex;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:15px 0}.flow-legend span{display:flex;gap:6px;align-items:center}.flow-legend i{width:19px;height:3px;display:inline-block}.legend-flow{background:#287a95}.legend-chord{background:#657481}.legend-separated{background:#c65c31}.flow-explanation{font-size:16px;border-left:3px solid var(--teal);padding-left:14px;min-height:52px}.try-it{padding:10px 0 20px}.try-it h3{font-size:19px}.try-it p{color:var(--muted)}.deeper{border-top:1px solid var(--line);padding:18px 0}.deeper summary{cursor:pointer;font-weight:600;color:var(--teal)}.spin-note{padding:20px 24px;background:#eaf1f4;border-radius:12px;margin:15px 0 35px}.spin-note h2{font-size:24px;margin-top:8px}.spin-note p{color:var(--muted)}.source-list li{margin:15px 0;font-size:14px}.source-list li span{display:block;color:var(--muted);font-size:13px}.source-list ol{padding-left:20px}.next-lesson{display:block;border-top:1px solid var(--line);margin:30px 0;padding:20px 0;font-weight:600;color:var(--teal)}
@media(max-width:600px){.stall-lab{padding:16px 12px}.lab-title{align-items:flex-start;flex-direction:column;gap:0}.lab-title h2{margin-bottom:10px}.flow-state{margin-bottom:15px}.angle-control{padding:12px}.chart-heading h3{font-size:15px}.chart-heading span{font-size:13px}.airflow-heading h3{font-size:15px}.airflow-heading button{font-size:12px}#airflow-canvas{height:270px}.flow-legend{gap:12px;font-size:12px}.spin-note{padding:18px}.range-labels{font-size:12px}.flow-explanation{min-height:80px}}